Definition of Maksutov–Cassegrain in US English:

Maksutov–Cassegrain

noun

Astronomy
  • A Maksutov–Cassegrain telescope or camera, having a deeply curved meniscus lens as a correcting plate and incorporating a small secondary mirror which reflects light back through a hole in the primary mirror.

Origin

1950s. From the names of Dimitri D. Maksutov and N. Cassegrain, French astronomer.